Iostephane

Iostephane
Iostephane heterophylla
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Heliantheae[1]
Genus: Iostephane
Benth.
Type species
Iostephane heterophylla
(Cav.) Benth.
Synonyms[1]
  • Pionocarpus S.F.Blake

Iostephane is a genus of Mexican flowering plants in the sunflower family.[2][3][4]

The species are rosette-forming herbaceous perennials that produce relatively large heads with yellow or purple (I. heterophylla) rays. They have large, somewhat quadrate cypselae (achenes), that may either have or lack a pappus. Molecular phylogenetic studies [5] suggested that there is an unexpectedly close relationship between Iostephane and Dendroviguiera [6] (Viguiera sect. Maculatae), a genus of shrubs and trees that is also endemic to Mexico.

Species[1]
  1. Iostephane heterophylla (Cav.) Benth. - widespread from Chihuahua to Oaxaca
  2. Iostephane madrensis (S.Wats.) Strother - Chihuahua
  3. Iostephane papposa J. J. Fay - Oaxaca
  4. Iostephane trilobata Hemsl. - Chiapas, Oaxaca, Puebla, México State

References

  1. ↑ 1.0 1.1 1.2 Flann, C (ed) 2009+ Global Compositae Checklist
  2. ↑ Bentham, George. 1873. Genera Plantarum 2: 368 in Latin
  3. ↑ Strother, J. L. 1983. Pionocarpus becomes Iostephane (Compositae: Heliantheae): a synopsis. Madroño 30: 34-48.
  4. ↑ Tropicos, Iostephane Benth.
  5. ↑ Schilling, E. E. and J. L. Panero. 1991. Evidence for a close relationship between Iostephane and Viguiera sect. Maculatae (Asteraceae: Heliantheae). American Journal of Botany 78: 1054-1062.
  6. ↑ Schilling, E, E. and J. L. Panero 2011. A revised classification of subtribe Helianthinae (Asteraceae: Heliantheae). II. Derived lineages. Botanical Journal of the Linnean Society 167: 311-331.